Adjusting hardware for sashes and the like



en. 20, 1938. y sMADsEN 2,149,842

v ADJUSTING HARDWARE FOR SASHES AND THE LIKE Filed April 12, 1957Patented Dec. 20, 1938 UNITED STATES PATENT OFFEE ADJUSTING HARDWAREFOR`SASHES AND THE LIKE Application April 12, 1937, Serial No..136,386

2 Claims.

An object of my invention is to provide adjusting hardware for sashesand the like having improved details of construction over the hardwareillustrated in my Letters Patent No. 2,048,131, of June 21, 1936.

A further object is to provide adjusting hardware of this generalcharacter having. a one-way bendable chain which is neat in appearanceand rigid when in an extended position due to its constructionalfeatures.

Still a further object is to provide at one end of the adjuster chain ameans for connecting the chain to a sash comprising an element having acentral pintle portion and enlarged end portions to receive screws whichextend into the sash.

Still a further object is to provide the links of the chain with gashesfor coaction with the worm threads of an operating worm enclosed in acase and from one link of the chain to omit the gash so that the worm ofthe operator can engage this link to limit extension of the chain fromthe case.

Another object is to provide an operating worm for the chain having abore and a crank having a shank removably and non-rotatably mounted inthe bore, means being provided in the bore for limiting the extension ofthe shank thereinto and such means being adjustable longitudinally ofthe bore to determine the extent of reception of the shank therein forthe particular window installation being made.

With these and other objects in view, my invention consists in theconstruction, arrangement and combination of thevarious parts of theadjusting hardware for sashes and the like, whereby the objectscontemplated are attained, as hereinafter more fully set forth, pointedout in my claims, and illustrated in the accompanying drawing, in which:

Figure 1 is a plan view of a window adjusting means embodying myinvention showing it applied to the vertical jamb member of a windowframe and showing a window in closed position thereagainst.

Figure 2 is a similar view showing diagrammatically the window extendedto an open position by the adjusting mechanism.

Figure 3 is a sectional View on the line 3 3 of Figure 1 showinginternal constructional details of the adjusting mechanism.

Figure 4 is a vertical sectional View on the line @5 4 of Figure 3showing an adjustable friction means for the operating or adjustinghardware to retain it in various adjusted positions.

Figure 5 is a sectional view on the line 5 5 of Figure 3 showing abottom plan View of one corner of-the operator and illustrating a trackassociated therewith for guiding the chain of the operator.

Figure 6 `is a perspective view of a straddle element'of the operatorchain.

Figure l is a perspective View of a tension element of the operatorchain.

Figure 8 is a perspective View of a pintle member for connection to oneend of the chain yfor attaching the chain to a sash; and

-Figure 9'is a bottom plan View of the chain illustrating theassociation of the straddle and tension elements and pintle member witheach other.

Referring to the accompanying drawing, in Figure 1 a window frame isillustrated having a side jamb H3 and a sill l2. A stool i3 is mountedon the sill l2. A sash S is closable against the window frame, the framehaving a stop lli against which the sash S closes. rounds-the sash andhas a leaf it engaging the `jamb l0 to provide a weather seal around thesash. The sash is'mounted relative to the win- `dow frame by means oftracks ifi, rollers 26 co- A weather strip W suri roperating therewithand pivoted arms 22, as clear- 25 lyrdisclosed in my co-pendingapplication Serial Number 127,148, filed February 23, 1937.

Briefly, two ofthe tracks I3 are attached to the headand sill ofthewindow frame. Two of the rollers 20 are provided, mounted on brackets`24 .30

extending from the sash S, and two of the arms 22 are provided havingtheir ends pivoted respectivelyA to brackets 2t at the top and bottomoi' the sash S and to the sill and head of the window as indicated at28. This type of mounting is pro- `vided'so that during the opening ofthe window,

the opening edge thereof travels in a substantially straight lineoutwardly lfrom the Window frame, as obvious from an inspection ofFigure 2.

An operator is provided for opening and closing the sash comprising acase C from which a chain C is adapted to extend. The case C is .made intwohalves, as shown in Figure 5I these .halves being held together andalso held on the jamb l0 by wood screws 3D.

The jamb IE) is routed out as indicated at 32 in Figure 4to receive theback of the case C' so that its outer face I4 below the case, thisgroove forming a continuation of the guide means.

The guide means comprises an inner curved wall 36, an outer curved wall38 and a pair of side walls 40. The walls 40 are supported by the curvedwalls 36 and 38 which have lateral extensions 42 engaged in slots 44 ofthe walls 40. The extensions 42 extend into slots 48 in the case C andare thereby held in a predetermined position relative to the case.

The chain C comprises a series of straddle elements A and a series oftension elements 48. The tension elements 48 have perforations 50 forpivot pins 52. The straddle elements A are channel shaped having webs 54and flanges 58. Gashes 58 are cut in the webs 54 for coaction with theteeth 88 of a worm 52, as shown in Figure 3.

The ends of the straddle elements A are adapted for thrusting engagementwith each other, while the flanges 58 are provided with pin bearingnotches 64 adapted to engage the peripheries of the pivot pins 52.

The tension elements 48 are successively arranged single and double asshown in Figure 9, and are positioned between the flanges 56. After thepivot pins 52 are inserted through the perforations 58 and through thenotches 64 and properly riveted, the elements of the chain C are held inassembled position for exing in one direction only.

The vertical ends of the flanges 56 of the straddle elements A limitbending of the chain to a straight line in one direction, while angularshoulders 86 are provided to permit flexing of the chain C in theopposite direction, so that it can bend in passing through the guides36-38- 48, but will remain in a rigid straight supported position whenextended as in Figure 2, thus retaining the sash S against either inwardor outward movement relative to the window frame.

The walls 48 of the guide are provided with longitudinal grooves 48which provide clearance for the riveted heads of the pivot pins 52 inthe travel of the chain through the guide within the case C. Theparticular construction of the chain permits alinement of the flanges 56with each other without the necessity of having to bend the ends thereofin inward and outward directions as shown in my Patent Number 2,048,131of June 21, 1936.

In operation it will be obvious that the worm 62 upon rotation willexpel or retract the chain due to the spiral thread 68 thereof engagingthe successive gashes 58 in the back of the chain. 'Ihe chain isconnected to the sash by a hinge element H comprising a central pintleportion 68 and enlarged end portions 10. These end portions areperforated to receive screws 'l2 extending into the sash S for attachingthe hinge element to the sash.

The pintle portion 68 is received in a loop 14 of a special tension linkhaving elongated arms 16 through which the rst two pivot pins 52 of thechain C extend so that the first link of the chain is non-pivotalrelative to the loop 14 and thereby this link is prevented from upwardinclination relative to the sash S by the pintle 68 extending throughthe loop 14 and being xed relative to the sash. This prevents anypossibility of pushing the center of the chain C upwardly when it isextended as shown in Figure 2, and thus prevents closure of the sash Sexcept by operation of the worm 62. The pintle portion 68 of the hingeelement H, however, permits pivotal movement of the chain C' in ahorizontal plane as the sash S is opened and its aspect angle relativeto the chain thus changes.

At the other end of the chain C a special straddle element A is providedwhich omits, at the position 58 illustrated in Figure 3, a gash 58.Accordingly as the chain is extended by rotation of the worm 62, thethreads 68 thereof will engage this portion of the straddle element Aand thus limit extension of the chain C' from the case C.

The worm 62 has a journalling sleeve 'I8 journalled in a bearing at oneend of the case C and in friction blocks 82 at the other end thereof.The friction blocks 82 are secured in the case C by adjusting screws 84,which, it will be noted in Figure 4, extend in opposite directions.'Ihis is so that access may be had to the head of one screw from oneside of the case C and access may be had to the head of the other screwfrom the other side of the case. 'I'herefore the case can be appliedeither to the right hand jamb or the left hand j amb of the windowframe, and a screw is available for adjusting the tension of the blocks82 on the sleeve 18, when applied either way.

The friction blocks and adjustment means are provided so that the worm62 can be locked against rotation due to any inward or outward pressureon the sash S tending to cause retraction or expulsion of the chain C',and thereby rotation of the worm 62.

The sleeve 18 is provided with a linear angular hole 88 to receive theshank 88 of a crank 98. The shank 88 is of considerable length and islimited in its extension into the sleeve 18 by a friction plug 92. Thisplug, as shown by solid and dotted lines in Figure 3, may assumedifferent positions and may be adjusted to such different positions bythe simple expedient of using a punch to drive it deeper toward eitherend of the bore 86 to suit the particular window installation beingmade. Obviously it is desirable to have the crank Sil project a minimumdistance from the inside casing of the window, yet clear the casingsuil'iciently to prevent striking the casing during rotation.

The plug 92, after being properly adjusted in the bore is held byfrictional contact therewith and thereby subsequently acts as a stop tolimit extension of the shank 88 into the bore whenever it is insertedtherein.

The type of adjusting hardware illustrated permits mounting of a screeninside of the sash S without the necessity of removing the screen whenthe adjusting hardware is to be operated. This is accomplished byarranging the screen stops 92 on the sides and top of the window frame,against which a screen 93 is positionable. The screen 93 may be held inposition, that is with the case C for the operator between the screenstop and the frame (as shown in Figure 1) and the case being positionedso that its inner face is ush with the inner face of the stops I4, thecase C does not in any way interfere with the positioning or removal ofthe screen 93.

Some changes may be made in the construction and arrangement of theparts of my adjusting hardware for sashes and the like without departingfrom the real spirit and purpose of my invention, and it is my intentionto cover by my claims any modiiied forms of structure or use ofmechanical equivalents which may be reasonably included within theirscope.

I claim as my invention:

1. In a device of the class described, a rotatable operator having abore, an operating crank having a shank removable and non-rotatablerelative thereto and a plug in said bore to limit the degree ofextension of said shank thereinto, said plug being of such size relativeto said bore that it is movable by abnormal pressure longitudinally ofthe bore to suit the particular installation being made and thereafterretained by friction against normal pressure of said shank thereagainstduring operation of the operator by the crank.

2. In a device of the class described, a rotatable operator having abore, an operating crank having a shank removable and non-rotatablerelative thereto and means in said bore to limit the degree of extensionof said shank thereinto, said means being movable longitudinally of thebore to suit the particular installation being made and thereafternormally remaining fixed relative to said bore to limit the subsequentextension of said shank into said bore.

SERN MADSEN.

